First of all, your TV is not interested in random gibberish from loud parties. It’s just not economically viable.

During the Soviet era, not everyone could afford to have a landline phone, but the system kept hunting down its dissidents one by one. If you are a person of interest (which I believe doesn’t apply to you), there are way more important signals to adversaries than your microphone.

It's important to choose your threat model. If your plan is to resist surveillance capitalism or just a random Bob and his grandmother snooping on you online, luckily, there are some effective methods. Otherwise, I would say it’s always a question of time, not 'if' or 'how.'

But as the video shows, the TV is doing text to speech and associating audio with a person. That text data is relatively very cheap to hang onto forever.

The problem is really that this tracking is at an absurd scale. So while an individual attacker isn’t targeting you and buying your profile from LG, the data is out there, and once it’s out there, it’s probably easy to get on the dark web if someone did want to do something nefarious. So it’s not just the surveillance capitalism.